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주용식,강설중 창원대학교 체육과학연구소 1999 경남 체육연구 Vol.4 No.2
본 연구는 마산 J 고등학교와 J 여자 고등학교에 재학중인 경력 3년 이상인 각각 12명으로 총 24명의 배구선수를 대상으로 배구 플로트 서브의 정확도와 순발력, 민첩성, 지구력, 유연성, 평형성, 그리고 근력 등의 체력요소와의 상관관계를 분석한 결과 다음과 같은 결론을 얻었다. 1. 남고 배구선수들의 플로트서브 정확도와 순발력간에는 보통의 상관관계를 나타냈으며 유의하였다. 2. 남고 배구선수들의 플로트서브 정확도와 유연성, 평형성간에는 높은 상관관계를 나타냈으며 유의하였다. 3. 남고 배고선수들의 플로트서브 정확도와 민첩성, 지구력, 근력간에는 유의한 상관관계가 발견되지 않았다. 4. 여고 배구선수들의 플로트서브 정확도와 유연성과 평형성간에는 높은 상관관계를 나타냈으며 유의하였다. 5. 여고 배구선수들의 플로트서브 정확도와 순발력, 민첩성, 지구력, 근력간에는 유의한 상관관계가 발견되지 않았다. 6. 전체적으로 고교 배구선수들의 플로트서브 정확도는 체력요인 중 유연성, 평형성과 높은 상관관계를 나타냈으나 플로트서브 정확도와 민첩성, 지구력, 근력간에는 유의한 상관관계가 발견되지 않았다.
강용석 ( Yong Seok Kang ),하성삼 ( Seong Sam Ha ),성재호 ( Jae Ho Seong ),한용재 ( Yong Jae Han ),임유리 ( Yoo Li Lim ),이태식 ( Tae Sic Lee ),김효열 ( Hyo Yeol Kim ),김영근 ( Young Keun Kim ),김종구 ( Jong Koo Kim ),박연철 ( Yon 전북대학교 의과학연구소 2014 全北醫大論文集 Vol.38 No.2
Indeterminate western blot in HIV infection can be due to seroconversion during acute HIV infection, advanced HIV infection or infection with HIV-2. In this report, we describe a patient whose advanced HIV infection was identified by a positive combined antigen/ antibody test and detectable viremia, with an inch of being misdiagnosed as acute HIV syndrome. A 23-year-old male was admitted with fever, myalgia, diarrhea and weight loss. He denied previous history of HIV infection, sexual contact and transfusion. Indeterminate western blot result made us misdiagnosis as a seroconversion in acute HIV syndrome. He denied his disease and insisted to delay antiretroviral therapy until positive western blot results. We had question about very low CD4 cell count (22/uL), and asked HIV/AIDS national registry for his previous registration. He was diagnosed HIV infection via blood donor screening 22 months before admission, but was not informed of the result. Finally the patient was confirmed advanced HIV infection and started antiretroviral therapy.
게임 기획을 위한 모델링의 표현요소 표기법에 관한 연구
김용식 ( Yong-sic Kim ),이남용 ( Nam-yong Lee ),류성열 ( Sung-yul Rhew ) 한국정보처리학회 2005 한국정보처리학회 학술대회논문집 Vol.12 No.1
게임 산업이 고도의 성장을 이루고 있는 현재 게임시장에서 대두되고 있는 문제점은 개발업무에 대한 능력과 자질이다. 대부분의 게임 개발 업무의 방식이 주먹구구식의 개발을 통해 게임을 제작하고 있다. 하지만 이러한 점은 게임제작에서 중요한 요소인 개념유지와 의사소통에 대한 문제점들로 나타난다. 이러한 문제점을 해결하기 위해 본 논문에서는 게임의 개념 단계에서 기획자의 아이디어를 제시하는 모델링을 위해 표현되는 요소를 연구하여 게임의 개념을 유지하고 개발자와의 원활한 의사소통을 통해 작업효율을 증대 시킬 수 있다.
Kim, Yong Sic,Kim, Keon,Moon, Dong Ju 한국공업화학회 2003 응용화학 Vol.7 No.2
The materials of LiNi_(1/2)Mn_(1/2)O₂are synthesized using PVA-assisted sol-gel and molten-salt synthesis. LiNi_(1/2)Mn_(1/2)O₂synthesized at 600℃ for 24h was performed the discharge capacity of about 90 and 180mAh/g. We increased the amount of acetylene black from 15wt% to 40wt% in cathode. The sample included 40wt% of acetylene black showed the higher discharge capacity of about 165mAh/g after 40 cycles. In case of LiNi_(1/2)Mn_(1/2)O₂heated at 900 ℃ for another 3h after the material was synthesized at 600℃ for 24h, it contained 40wt% of acetylene black performed higher discharge capacity, about 220mAh/g after 70 cycles.
CHARACTERISTICS OF FABRICATED SiC RADIATION DETECTORS FOR FAST NEUTRON DETECTION
Lee, Cheol-Ho,Kim, Han-Soo,Ha, Jang-Ho,Park, Se-Hwan,Park, Hyeon-Seo,Kim, Gi-Dong,Park, June-Sic,Kim, Yong-Kyun The Korean Association for Radiation Protection 2012 방사선방어학회지 Vol.37 No.2
Silicon carbide (SiC) is a promising material for neutron detection at harsh environments because of its capability to withstand strong radiation fields and high temperatures. Two PIN-type SiC semiconductor neutron detectors, which can be used for nuclear power plant (NPP) applications, such as in-core reactor neutron flux monitoring and measurement, were designed and fabricated. As a preliminary test, MCNPX simulations were performed to estimate reaction probabilities with respect to neutron energies. In the experiment, I-V curves were measured to confirm the diode characteristic of the detectors, and pulse height spectra were measured for neutron responses by using a $^{252}Cf$ neutron source at KRISS (Korea Research Institute of Standards and Science), and a Tandem accelerator at KIGAM (Korea Institute of Geoscience and Mineral Resources). The neutron counts of the detector were linearly increased as the incident neutron flux got larger.
Massive MIMO signal transmission in spatially correlated channel environments
Park, Chan-Sic,Byun, Yong-Suk,Lee, Jeong Woo,Lee, Yong-Hwan SpringerOpen 2016 Eurasip Journal on Wireless Communications and Net Vol.2016 No.-
<P>Employment of massive multi-input multi-output (m-MIMO) transmission techniques has recently been considered as a key technology for the provision of high capacity to a large number of users. Zero-forcing beamforming (ZFBF) techniques can be employed to maximize the transmission capacity, but they may require high implementation complexity in multi-user m-MIMO transmission environments. In this paper, we consider multi-user m-MIMO signal transmission with flexible complexity in spatially correlated channel environments. We initially set the beam weight for conventional maximum ratio transmission (MRT), which may experience interbeam interference. Then, we adjust the beam weight to remove the interbeam interference, while taking into account the trade-off between the implementation complexity and the performance. To this end, we sequentially adjust the beam weight to remove the interbeam interference in a descending order of interference power. The more interference sources are removed, the closer the performance of proposed scheme approaches to that of ZFBF. The proposed beamforming (BF) technique can provide performance close to that of ZFBF in highly correlated m-MIMO channel environments, while significantly reducing the implementation complexity.</P>